Limitations of the electro-optic response of thin potassium tantalate niobate (KTN) films caused by ferroelectric hysteresis behavior
作者： R Gerhard(-Multhaupt) , S Yilmaz , S Bauer , W Ren , None
DOI: 10.1080/00150199408229532
关键词: Optoelectronics 、 Tantalate 、 Deposition (law) 、 Pockels effect 、 Electrode 、 Substrate (electronics) 、 Layer (electronics) 、 Thin film 、 Materials science 、 Epitaxy 、 Optics 、 Electronic, Optical and Magnetic Materials 、 Condensed matter physics
摘要: Abstract Thin films of potassium tantalate niobate (KTN) were prepared by means pulsed excimer-laser deposition and investigated with a number analytical techniques including electrical electro-optical measurements. For applications in longitudinal electro-optic (EO) modulators, second electrode is required between substrate EO layer. Suitable epitaxial electrodes, which also permit growth KTN, identified prepared. The resulting layered samples not only good optical quality, but exhibited maxima the Pockels effect at expected temperatures. It was, however, found that linear quadratic effects became saturated fields above 600 kV/m. maximum phase shift thus limited to roughly π/100 for KTN thickness range around 1 μm; saturation caused ferroelectric hysteresis KTN. Consequently, relatively thick are necessary most applications, turn requires significant improve...
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